Common Compounds Including Argon
Since Argon is a noble gas, it does not form compounds. Scientists made Argon Fluorohydride in a lab

Argon Fluorohydride
is a compound formed by mixing Argon and Hydrogen Fluoride together in temperatures under −265 °C. If the temperature goes over −256 °C the compound will decompose back into Argon and Hydrogen Fluoride. So far it has no uses.
This is a picture of the compound Argon Fluorohydrideargonfyazan.png